Summary: I bought this external DVD unit for both a MacBook Air and an old desktop PC which lacks an internal BluRay drive. On both computers, it was plug-and-play. No software installation was needed. There are a few problems with this drive, however, that I cannot really recommend it. First, it is butt ugly. This is a particularly serious problem with the beautiful MacBook Air. Second, it does not play BluRay on a Mac(although this is probably a universal problem).